title: Sample size requirements for interval estimation of the odds ratio.
abstract: Sample sizes are calculated for unmatched case-control (or cohort) studies where the goal is interval estimation of the odds ratio. The procedure used gives the smallest sample size for which a 100(1-alpha)% confidence interval for the log odds ratio will not exceed a specified width with specified probability (1-gamma). Tables of sample sizes for various choices of parameter values are presented. Considerable disagreement is found with a published method which has as its basis expected cell counts.
authors.affiliation: Department of Biostatistics, School of Public Health, University of North Carolina, Chapel Hill 27599-7400.
authors.forename: G A
authors.initials: GA
authors.lastname: Satten
authors.forename: L L
authors.initials: LL
authors.lastname: Kupper
mesh_terms: D016022:Case-Control Studies; D015331:Cohort Studies; D016001:Confidence Intervals; D016017:Odds Ratio; D011336:Probability; D013223:Statistics as Topic